Issue #15065 changelogs and nit fix.

Author: astojilj

platform/android/CHANGELOG.md

@@ -5,6 +5,7 @@ Mapbox welcomes participation and contributions from everyone.  If you'd like to
 ## master
 
 * Performance improvements for queryRenderedFeatures API and optimization that allocates containers based on a number of rendered layers. ([#14930](https://github.com/mapbox/mapbox-gl-native/pull/14930))
+- Fixed rendering layers after fill-extrusion regression caused by optimization of fill-extrusion rendering [#15065](https://github.com/mapbox/mapbox-gl-native/pull/15065)
 
 ## 8.2.0-alpha.2 - July 3, 2019
 

platform/ios/CHANGELOG.md

@@ -5,6 +5,7 @@ Mapbox welcomes participation and contributions from everyone. Please read [CONT
 ## master
 
 * Performance improvements for queryRenderedFeatures API and optimization that allocates containers based on a number of rendered layers. ([#14930](https://github.com/mapbox/mapbox-gl-native/pull/14930))
+* Fixed rendering layers after fill-extrusion regression caused by optimization of fill-extrusion rendering. ([#15065](https://github.com/mapbox/mapbox-gl-native/pull/15065))
 
 ## 5.2.0
 

platform/macos/CHANGELOG.md

@@ -5,6 +5,7 @@
 * Added an `MGLMapView.prefetchesTiles` property to configure lower-resolution tile prefetching behavior. ([#14816](https://github.com/mapbox/mapbox-gl-native/pull/14816))
 * Fixed queryRenderedFeatues bug caused by incorrect sort feature index calculation. ([#14884](https://github.com/mapbox/mapbox-gl-native/pull/14884))
 * Performance improvements for queryRenderedFeatures API and optimization that allocates containers based on a number of rendered layers. ([#14930](https://github.com/mapbox/mapbox-gl-native/pull/14930))
+* Fixed rendering layers after fill-extrusion regression caused by optimization of fill-extrusion rendering. ([#15065](https://github.com/mapbox/mapbox-gl-native/pull/15065))
 
 ### Styles and rendering
 

src/mbgl/renderer/render_orchestrator.cpp

@@ -342,15 +342,16 @@ std::unique_ptr<RenderTree> RenderOrchestrator::createRenderTree(const UpdatePar
         }
     }
 
-    uint32_t i = static_cast<uint32_t>(layerRenderItems.size()) - 1;
-    for (auto it = layerRenderItems.begin(); it != layerRenderItems.end(); ++it, --i) {
-        RenderLayer& renderLayer = it->layer;
-        renderLayer.prepare({it->source, *imageManager, *patternAtlas, *lineAtlas, updateParameters.transformState});
+    auto opaquePassCutOffEstimation = layerRenderItems.size();
+    for (auto& renderItem : layerRenderItems) {
+        RenderLayer& renderLayer = renderItem.layer;
+        renderLayer.prepare({renderItem.source, *imageManager, *patternAtlas, *lineAtlas, updateParameters.transformState});
         if (renderLayer.needsPlacement()) {
             layersNeedPlacement.emplace_back(renderLayer);
         }
         if (renderLayer.is3D() && renderTreeParameters->opaquePassCutOff == 0) {
-            renderTreeParameters->opaquePassCutOff = i;
+            --opaquePassCutOffEstimation;
+            renderTreeParameters->opaquePassCutOff = uint32_t(opaquePassCutOffEstimation);
         }
     }
     // Symbol placement.